CN100453753C - Four-point supporting large-span flat grid shell roof structure with prestressed space tube truss - Google Patents
Four-point supporting large-span flat grid shell roof structure with prestressed space tube truss Download PDFInfo
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- CN100453753C CN100453753C CNB2006102006760A CN200610200676A CN100453753C CN 100453753 C CN100453753 C CN 100453753C CN B2006102006760 A CNB2006102006760 A CN B2006102006760A CN 200610200676 A CN200610200676 A CN 200610200676A CN 100453753 C CN100453753 C CN 100453753C
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- truss
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- fixed
- flat grid
- grid shell
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Abstract
The present invention discloses a four-point supporting large-span flat grid shell roof structure with an internal prestressed space tube truss. The present invention comprises a hyperbolic flat grid shell body (1), a side truss (2) and a support column (8), wherein a montant (4) is fixed on an inverse quadrangular pyramid diagonal web member (3) of the side truss (2); the end part of the free end of the montant (4) is provided with a fixed pulley (5); a prestressed cable (6) penetrates in the fixed pulley (5); both ends of the prestressed cable (6) are respectively fixed on nodes of a supporting seat of the side truss (2). The present invention can greatly reduce the pipe diameter of a lower chord of the side truss, improve the stress of the hyperbolic flat grid shell, improve the structural integral rigidity and save steel using amount.
Description
Technical field:
The present invention relates to a kind of roof structure, especially a kind of prestressing with bond space tube truss four-point supporting large span flat grid shell roof structure.
Background technology:
(L 〉=60m) flat grid shell roof is by two most compositions, and one is a double arch flat web housing part for the four-point supporting large span; Its two be the fringe truss that directly links to each other with a bearing post partly.The former directly bears the roofing load and reaches hoop truss; The latter passes to bearing post with the load that flat net shell distributes, and Neither of the two can be dispensed, and is whole each other.Flat net shell is formed by intersecting truss or pyramid system, and along with span is ascending, can be individual layer, double-deck, double-deck or three layers on the double-deck periphery of central authorities of middle individual layer periphery, reaches three layers.The layer that winds up of fringe truss is generally bilayer (or three layers), also is flat net shell periphery grid, mainly bears pressure, and web member is born shearing, and lower edge is born pulling force.General space tube truss winds up by two, and quadrangular pyramid web member and a lower edge are formed fusiformis and intended the beam type space lattice, are mainly used in the large public building of two supports.Because flat net shell fringe truss load area, causes the long-pending increase rapidly of fringe truss lower edge steel tube section much larger than general truss, caliber is excessive, not only steel using amount surge, and the joint structure difficulty increases.
Summary of the invention:
The objective of the invention is to: provide the simple prestressing with bond space tube truss of rigidity, good integrity, the joint structure four-point supporting large span flat grid shell roof structure of the little and structure of a kind of steel using amount, to solve the problem that prior art exists.
The present invention constitutes like this: it comprises double arch flat web housing, fringe truss and bearing post, on the reversed four-angle taper incline web rod of fringe truss, be fixed with montant, fixed pulley is equipped with in free end end at montant, be installed with prestressed cable in fixed pulley, the two ends of prestressed cable are separately fixed on the support node of fringe truss.
Montant is fixed on the lower-chord panel point of reversed four-angle taper incline web rod, and the free end of montant is positioned at the V-arrangement zone that two adjacent reversed four-angle taper incline web rods constitute.
The present invention adopts prestressing with bond space tube truss structure as the large span (fringe truss of four-point supporting flat grid shell roof of L 〉=60m), not only solved the excessive problem of fringe truss lower edge diameter of steel tube in the prior art, saved steel, but also significantly improved structure rigidity and globality, simplified the structure of node.
Description of drawings:
Accompanying drawing 1 is an axonometric drawing of the present invention;
Accompanying drawing 2 is the lateral view of accompanying drawing 1;
Accompanying drawing 3 is the A-A sectional view of accompanying drawing 2.
The specific embodiment:
Embodiments of the invention: it comprises the fringe truss 2 and the bearing post 8 of double arch flat web housing 1, general space tube truss structure, on the reversed four-angle taper incline web rod 3 of fringe truss 2, be fixed with montant 4, montant 4 is fixed on the lower-chord panel point of reversed four-angle taper incline web rod 3, and the free end of montant 4 is positioned at the V-arrangement zone (as accompanying drawing 2, shown in Figure 3) that two adjacent reversed four-angle taper incline web rods 3 constitute, fixed pulley 5 is equipped with in free end end at montant 4, be installed with prestressed cable 6 in fixed pulley 5, the two ends of prestressed cable 6 are separately fixed on the support node of fringe truss 2.When prestressing force is set up in 6 stretch-draw to prestressed cable, montant 4 will upwards act on the lower-chord panel point that reaches fringe truss 2, this moment montant 4 tensions, fringe truss 2 lower-chord panel points produce nodal forces upwards, it is opposite at the nodal forces under the load action with structure, make fringe truss 2 produce reversible deformation, thereby reduce structural internal force, improve each rod member distribution of internal force of flat net shell, improve structural entity rigidity, the steel pipe caliber of the lower chord tube 7 of fringe truss 2 is reduced, save steel using amount, because prestressed cable 6 is in fringe truss 2 inside, do not account for fringe truss 2 structure heights, thereby can reduce depth of building, reduce steel using amount, reduce cost.
Claims (2)
1. prestressing with bond space tube truss four-point supporting large span flat grid shell roof structure, it comprises double arch flat web housing (1), fringe truss (2) and bearing post (8), it is characterized in that: on the reversed four-angle taper incline web rod (3) of fringe truss (2), be fixed with montant (4), in the free end end of montant (4) fixed pulley (5) is housed, be installed with prestressed cable (6) in fixed pulley (5), the two ends of prestressed cable (6) are separately fixed on the support node of fringe truss (2).
2. the flat latticed shell structure of prestressing with bond space tube truss four-point supporting large span according to claim 1, it is characterized in that: montant (4) is fixed on the lower-chord panel point of reversed four-angle taper incline web rod (3), and the free end of montant (4) is positioned at the V-arrangement zone that two adjacent reversed four-angle taper incline web rods (3) constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006102006760A CN100453753C (en) | 2006-07-07 | 2006-07-07 | Four-point supporting large-span flat grid shell roof structure with prestressed space tube truss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006102006760A CN100453753C (en) | 2006-07-07 | 2006-07-07 | Four-point supporting large-span flat grid shell roof structure with prestressed space tube truss |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1877040A CN1877040A (en) | 2006-12-13 |
| CN100453753C true CN100453753C (en) | 2009-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006102006760A Expired - Fee Related CN100453753C (en) | 2006-07-07 | 2006-07-07 | Four-point supporting large-span flat grid shell roof structure with prestressed space tube truss |
Country Status (1)
| Country | Link |
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| CN (1) | CN100453753C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100562631C (en) * | 2007-04-05 | 2009-11-25 | 崔文瀛 | Spherical netted shell combined structure |
| CN103061456B (en) * | 2011-10-21 | 2015-06-03 | 张如成 | Steel pipe concrete braced arch with lower suspension prestress high-strength steel hinge line |
| CN103669566B (en) * | 2013-12-09 | 2015-12-30 | 中国建筑第二工程局有限公司 | The construction method of the steel reinforced concrete pedestal on large span grid roof |
| CN104631621B (en) * | 2015-02-15 | 2017-04-05 | 中国建筑西南设计研究院有限公司 | Saddle-shape cable support single-layer latticed shell |
| CN106193306B (en) * | 2016-08-17 | 2018-09-18 | 中国航空规划设计研究总院有限公司 | A kind of long-span hangar fringe truss prestressed structural systems and its construction method |
| CN108005232B (en) * | 2017-11-21 | 2023-11-03 | 中冶京诚工程技术有限公司 | Structure system and house structure of prestressed pipe truss and latticed shell combination |
| CN107916739A (en) * | 2017-12-22 | 2018-04-17 | 贵州大学 | Large-span concrete bucket shape grid shell roof structure and preparation method thereof |
| CN115977407B (en) * | 2022-12-23 | 2024-01-26 | 中国建筑第二工程局有限公司 | Prestressed large-span truss string slipping construction system and construction method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990005220A1 (en) * | 1988-11-03 | 1990-05-17 | Garry Randall Hart | Adjustable space frames and trusses |
| WO1996001930A1 (en) * | 1994-07-11 | 1996-01-25 | Weatherhaven Resources Ltd. | Self-supporting collapsible covered frame structure |
| CN1789636A (en) * | 2005-12-22 | 2006-06-21 | 高维成 | Pulley type truss-string arc-scaffolding combined structural system |
-
2006
- 2006-07-07 CN CNB2006102006760A patent/CN100453753C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990005220A1 (en) * | 1988-11-03 | 1990-05-17 | Garry Randall Hart | Adjustable space frames and trusses |
| WO1996001930A1 (en) * | 1994-07-11 | 1996-01-25 | Weatherhaven Resources Ltd. | Self-supporting collapsible covered frame structure |
| CN1789636A (en) * | 2005-12-22 | 2006-06-21 | 高维成 | Pulley type truss-string arc-scaffolding combined structural system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1877040A (en) | 2006-12-13 |
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Granted publication date: 20090121 Termination date: 20160707 |
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